Refactoring ModernaResidue. So far, chi rotation works.
created new test package for modifications.
Refactored package moderna.modifications. Tests for package pass.
Refactored package moderna.modifications with toplevel functions. All tests pass.
Merging master in progress
Merge branch 'master' into modifications
Added comment to travis file - how to add emails.
Bug fixing.
Merge pull request #51 from lenarother/modifications

Modifications